What does the r in the equation stand for ?

Rate: This is the application formula.

Step-by-step explanation:

314 units

Step-by-step explanation:

The surface area formula for a sphere is --->

-If the radius is 5 unites, then simply substitute 5 for r

or

In order to solve we need to use order of operations: PEMDAS

We start from right to left

P= Parenthesis ()

E= exponents x²

M= multiplication X

D=divison ÷

A= addition +

S= subtraction -

Now that we know this, we can solve:

Exponents are first - 5² or (5x5) = 25

4(3.14)(25)

Now multiply-  25 X 3.14 = 78.5

                        4 X 78.5 = 314

Therefore the surface area of the sphere is 314 units